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a2low240
05-29-2005, 10:16 AM
Ok so I pondering a new project, the goal in mind is to have plenty of torque but keep the car streetable and fun to drive as well. I have always liked the Mazda FD chassis and wanted to do a crazy engine swap in one because I am not a fan of the rotary motors but a fan of the chassis. I like the torque of the I6 motors and their ability to handle some serious power.

Transit_Society
05-29-2005, 04:11 PM
Matt -
Very unique idea. However I would put into consideration the weight of the huge cast iron block vs. the lightweight rotary.

I think this would seriously offset the well balanced setup of the FD.

At least the SR that Chris & Tony put in the FC was lighter than the RB so shouldnt have offset the balance much. Not sure the exact weight difference between the SR & rotary, but there would be quite a difference between SR & RB.

However, I agree with you 100%, the torque, smoothness and sound of the I-6 is definitely a plus. Just not sure how well the motor would do in an FD. I suppose it would really depend on your goal & usage of the car.

steve shadows
05-29-2005, 04:20 PM
what does "FD" or "rb25" have to do with s-chasis cars?

sorry i fail to see the connection...

OHH_
05-29-2005, 06:42 PM
what does "FD" or "rb25" have to do with s-chasis cars?

sorry i fail to see the connection...



agreed. but as a side note a 2jzgte from a supra was put in an fd and that could not have weighed much less if less at all

a2low240
05-30-2005, 09:58 PM
what does "FD" or "rb25" have to do with s-chasis cars?




Honestly just a question, I am not set upon he RB yet but I figured I would pose the idea to some of the most well versed nissan people. Sorry to clutter up the S chassis board with nonsense. Good night..

Busted_lips
05-31-2005, 05:52 AM
hey kat. Don't drop this subject, just bring the idea to life uopn a forum standing, with more emphasis on the detailing in how you are going about to perform this operation sucessfully. That will in turn, increase the IQ of some enthusiasts, and build inspiration (upon completion) of this wild projsect. So In my opinion, I stand for a state of awareness toward finance, convenience, and experience. you better know yah [censored], before you try to take on "smokey". As well as SP. Shots out.

moorefire
05-31-2005, 06:19 AM
what does "FD" or "rb25" have to do with s-chasis cars?




Honestly just a question, I am not set upon he RB yet but I figured I would pose the idea to some of the most well versed nissan people. Sorry to clutter up the S chassis board with nonsense. Good night..



I've been dreaming about an FD project too. I just hate rotarys...

I'm hoping that if an RB fits, then an LT1 will.

And if you nerds jack this thread with weight balance arguments and theoretical engine design debates I'm gonna start slicing throats

I don't care about balance. I just want usuable low end, and a cool exhaust note.

BlackBomber
05-31-2005, 06:42 AM
well the sr into fd has been done a few times so the uniqueness of the rb >> fd has some appeal.

TNT went 10.50 @ 137 in his sr powered fd that was featured in Modified Mag.

asad
05-31-2005, 07:45 AM
I'm hoping that if an RB fits, then an LT1 will.



V8's into RX7's have been done before, even into FD's.

Asad

VeilSideS14
05-31-2005, 07:58 AM
Import Racer magazine is following the build of an RB26 in an FD. The first issue was May 2005. http://forums.freshalloy.com/images/graemlins/shocked.gif http://forums.freshalloy.com/images/graemlins/grin.gif

killjoy
05-31-2005, 08:00 AM
I think an rb would be cool. Way too much money involved for me to ever switch but if a sr can go 10's than a rb should be fun to see.

Hiram_aka_Chingon
05-31-2005, 08:59 AM
Go to torquecentral.com ..there's a v8 rx7 lounge in their forum section.
While on the subject of inline 6's, why not the 1jzgte? You'd have more oil pan options than the rb, and sincerely, I think it's a better engine. I know a guy who dropped one in his fc3s. He goes by the name of supra7 in the teamfc3s.org forums.

Vapor
05-31-2005, 09:03 AM
I've been dreaming about an FD project too. I just hate rotarys...

I'm hoping that if an RB fits, then an LT1 will.



LS1 fits, there is a 'neck shop in GA that does those conversions all the time. My buddy down here is building one. Why you would go with the LT1 is beyond me anyway.

killjoy
05-31-2005, 11:24 AM
Because LT1's are way cheaper for generally the same engine. The LT1 is a little heavier since its not fully aluminum, but the LT1 is a kickass engine. A friend of mine tunes them very well and runs constant low 11's on a heavy ass Impala SS. Oh yeah, the motor is bone stock with a cam.

TeckniX
05-31-2005, 11:38 AM
Really what it boils down to is:
- $$$$ cuz it's gona cost you a lot
- relocation of the entire steering rack (otherwise oil pan is sitting on top of it)
- custom mounts of course http://forums.freshalloy.com/images/graemlins/wink.gif
- custom driveshaft
- figuring out wiring so you can run all your internal controls and have the engine run smoothly
- flex lite fans are a must
- forget about ac and possibly power-steering
- lots of custom piping for FMIC and coolant routing.
Once you've got all this figured out, take some pictures and post them here.
v8s are somewhat easier cuz they take less space... hard to believe, but really you're only 4 cylinders deep into the engine bay, instead of 6!

JimStinksAtDorifto
05-31-2005, 11:53 AM
I'm hoping that if an RB fits, then an LT1 will.




http://members.tripod.com/~grannys/3rdgenrx7chevyv8.html
http://www.hinsonsupercars.com/mountingEquipment.htm

and the new goods..

http://members.tripod.com/~grannys/mazda.html

moorefire
05-31-2005, 12:06 PM
I've been dreaming about an FD project too. I just hate rotarys...

I'm hoping that if an RB fits, then an LT1 will.



LS1 fits, there is a 'neck shop in GA that does those conversions all the time. My buddy down here is building one. Why you would go with the LT1 is beyond me anyway.



ahh hah, I see, I still have a lot to learn about domestic v8s. Its just a pipe dream for now...

Thanks for the info guys

anyway to get this thread back on track (sorry matt), lets see that RB FD, I bet that ish makes some sweet noises

FreeThinker
06-01-2005, 03:40 AM
A much better option is a VQ30DE if you would like a DOHC 6cyl. Sure it doesn't have the sound of an I6, but the Nissan VQ series sounds pretty damn good, and I believe it is almost exactly the same weight as the 13B-REW. Plus You can bolt a VQ35 6-spd on there and have the extra gear Mazda never offered, with the torque, longevity and gas mileage other FD owners can only dream of. Plus you car still handles like an OEM RX-7. Hard to beat that combo.

'Allen' on here recently did an FC with this setup and it looks like it came out great.

http://www.torquecentral.com/showthread.php?s=5bd96856e9a8d6e69e3946d1be34ca37& t=22517&page=2&pp=25

Cheers,

a2low240
06-01-2005, 07:59 AM
I appreciate all the input. Weight of the motor should not matter as long as I move the weight of it back a little bit towards the rear of the car, the car should stay well balanced.

Atleast I did'nt say RB in a Miata. Now that would be sick ( also pointless )

Fred_Allen_Burge
06-01-2005, 10:11 AM
'Allen' on here recently did an FC with this setup and it looks like it came out great.



Whoa there Freethinker, that's not my car. I'm putting a VQ into my S14. That car was built by "Thaniel" and is where I got my idea and a lot of help along the way too.

allen

lyon23
06-01-2005, 08:05 PM
I appreciate all the input. Weight of the motor should not matter as long as I move the weight of it back a little bit towards the rear of the car, the car should stay well balanced.

Atleast I did'nt say RB in a Miata. Now that would be sick ( also pointless )



I like the whole idea of an rb powered fd. I think it would be great. oh and about the rb in a miata how's this

http://home.comcast.net/~chelrodriguez/rb26miata.jpg if it doesnt come up CLICK HERE (http://apexlater.net/images/) and look for a pic called rb26miata.jpg

killjoy
06-02-2005, 07:52 AM
Actual pic is here. (http://apexlater.net/images/rb26miata.jpg)